Recursive Integer Cosine Transform for HEVC and Future Video Coding Standards

A method to derive an order-2 N integer cosine transform is presented in this paper. The proposed transform has orthogonal basis vectors and inherits the recursive structure from the discrete cosine transform such that an order-2 N transform can be derived from an order-2 (N-1 transform. In this pap...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems for video technology 2017-02, Vol.27 (2), p.326-336
Main Authors: Fong, Chi-Keung, Han, Qinglong, Cham, Wai-Kuen
Format: Article
Language:English
Subjects:
Coding
Coding standards
Discrete cosine transform
Discrete cosine transform (DCT)
Discrete cosine transforms
Encoding
Hardware
High Efficiency Video Coding (HEVC)
integer cosine transform (ICT)
Matrix decomposition
transform coding
Video coding
Video compression
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Summary:A method to derive an order-2 N integer cosine transform is presented in this paper. The proposed transform has orthogonal basis vectors and inherits the recursive structure from the discrete cosine transform such that an order-2 N transform can be derived from an order-2 (N-1 transform. In this paper, transforms up to order 32 are derived and implemented into High Efficiency Video Coding reference model HM13.0. Compared with the core transform in HM13.0, the proposed transform has more flexibility and lower complexity for implementation while providing almost the same coding performance.
ISSN:1051-8215
1558-2205
DOI:10.1109/TCSVT.2015.2513664